Eberspächer B1L Installation Instructions Manual - page 8
Running the combustion air/Running the exhaust
Permissible diameters, lengths, bends of combustion air and exhaust lines.
Measurements in millimeters
Permissible
blend
Exhaust
lines
Exhaust line:
max. 180
0
B 1 L max. 500 mm long
Combustion air line:
max. 180
0
D 1 L max. 1000 mm long
must not be exceeded.
The scope of delivery includes an exhaust pipe, 270 mm long,
with 900 bend, and a combustion air tube, 500 mm long, with
90° bend.
These can be shortened as required. Longer pipes are avai-
lable as given in the Additional Equipment Catalog.
Additional noise suppression is possible by installing an ex-
haust silencer (see chapter "Exhaust Parts" in the Additional
Equipment Catalog). The permissible length of the exhaust line
is reduced here by the length of the exhaust silencer.
The combustion air must be sucked in from the outside, not
from the passenger compartment or trunk.
Do not install the intake opening facing the slipstream, but run
it in such a manner that dirt and snow cannot enter and that
any water which does enter can flow out.
Exhaust lines must not project beyond the sides of the vehicle.
They must be laid either with a slight slope or with 5 mm dia.
holes at the lowest points for draining off condensate.
Arrange the exhaust outlet and the combustion air opening
such that the exhaust cannot be sucked back in directly.
The exhaust outlet must be on the outside. Exhaust lines must
be laid in such a way that neither the penetration of exhaust
into the vehicle interior nor the intake of exhaust through the
vehicle or heater blowers need be expected'), and that the
operation of essential vehicle parts is not affected (ensure
adequate clearance). Place the outlet opening of the exhaust
line in such a way that it cannot be clogged by dirt and snow
and that any water which does enter can run off. Do not install
facing the slipstream.
1) This requirement can be considered met if the outlet
opening of the exhaust line is located at the usual places in
motor vehicles, e.g. in engine compartment, in wheel case, on
the vehicle underside, or on the rear of the cab.
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